Patent US4408027A successfully refreshed from Google Patents.
US4408027A
Expired / Lapsed
US
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Foils of polyacetylene
Assignee: Bayer AG
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Filing: 1981-07-31
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Granted: 1983-10-04
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Expires: 2001-07-31
Abstract
Abstract Process for the production of a suspension of polyacetylene in the form of particles having a diameter of from 0.01 to 1 mm and having a great number of fibrous appendices comprising introducing acetylene in an organic suspending agent under constant stirring, in the presence of an aluminum-containing organometallic mixed catalyst in an amount corresponding to 10 to 100 m moles aluminium per liter suspending agent, at temperatures of from -100° to 80° C., until a maximum of 10 g, preferably 1 to 3 g of polyacetylene per liter of suspending agent have been formed.
Inventors
- 👤 Jurgen Hocker
- 👤 Wolfgang Wieder
- 👤 Rolf Dhein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:08
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08F; C08F38/00; C08F38/02; C08J2349/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
92 words
Process for the production of a suspension of polyacetylene in the form of particles having a diameter of from 0.01 to 1 mm and having a great number of fibrous appendices, wherein acetylene is introduced in an organic suspending agent under constant stirring, in the presence of an aluminum-containing organometallic mixed catalyst in an amount corresponding to 10-100 mmol aluminium per liter suspending agent, at temperatures of from -100° to +80° C., until a maximum of 10 g, preferably 1 to 3 g of polyacetylene per liter of suspending agent have formed.
Claim 2
Dependent Claim
92 words
Process for the production of a suspension of polyacetylene in the form of particles having a diameter of from 0.01 to 1 mm and having a great number of fibrous appendices, wherein acetylene is introduced in an organic suspending agent under constant stirring, in the presence of an aluminum-containing organometallic mixed catalyst in an amount corresponding to 10-100 mmol aluminium per liter suspending agent, at temperatures of from -100° to +80° C., until a maximum of 10 g, preferably 1 to 3 g of polyacetylene per liter of suspending agent have formed.
Claim 3
Dependent Claim
27 words
Process for the production of a foil of the polyacetylene particles of claim 1 which comprises removing the suspending agent with simultaneous felting together of the particles.
References Cited (Backward Citations)
US3119799A
Cited
US4277588A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-10-03 | 1987-04-04 | 1987-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-10-03 | 1991-04-04 | 1991-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-10-03 | 1995-04-04 | 1995-10-04 | $7700.00 | Window Closed / Lapsed |